Ratchet track-jack



T. R GABEL RATGHETTRAGK JACK.

Patented'Sep t. 17, 1889..

(No Model.)

a m F M L .u, #71175 a E UNITED STATES PATENT OFFICE.

RATCH ET TRACK-JAG K.

SPECIFICATION forming part of Application filed June 24, 1889.

Letters Patent No. 411,411, dated. September 17, 1889.

Serial No. 315,443." (11% model.)

To all whom it may concern:

Be it known that LTHoMAs RING GABEL, a citizen of Canada, residing atAlbuquerque, in the county of Bernalillo and Territory of New Mexico,have invented certain new and useful Improvements in RatchetTrack-Jacks, of which the following is a description.

The object of my invention is to do away with the necessity of spring-coils or other complications incident to track-jacks. This 1accomplish by means of the liftin g-bar L, sliding in the guides S, thelever A, having its fulcrum F sliding in the slots B, the end of whichlever engages with the rack in the lifting-bar L. a. By depressing thelever A the lifting-bar L is raised until the pawl P, by reason of itsown weight, drops into place one notch directly under point of leverAandsustains the weight on lifting-bar L. By placing the foot on the end ofpawl P it withdraws the point of the pawl from the rack in thelifting-bar L and allows the lifting-bar to fall into position at thebase of the frame G.

Figure 1 represents a part sectional elevation of jack, showing thelifting-bar L sliding in the guides S, which guides are a part of theframe G, the lever A, having its fulcrum F sliding in the slots B andthe end thereof engaging with the rack in the lifting-bar L, the pawl Palso engaging with the rack in the lifting-bar L. Fig. 2 represents aback view of the jack. Fig. 3 represents a full side elevation of thejack.

Having thus described my improvements, I claim- 1. The combination, withthe upright frame G, having the loops or guides S projecting laterallytherefrom, of the lifting-bar L, sub stantially as set forth.

2. The combination, With the upright frame having the slotted bearingsfor the lever, of the said lever engaging therewith and with thelifting-bar, and the pawl P, substantially as described.

THOMAS RING GABEL. Vitnesses:

WILLIAM G. HAZLEDINE, E. D. BULLOCK.

